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31,389
RESULTS

Media Type
29,037
texts
1,468
movies
658
audio
154
data
23
images
21
web
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Topics & Subjects
10,032
ERIC Archive
6,909
NASA Technical Reports Server (NTRS)
4,921
EARTH RESOURCES PROGRAM
3,601
Educational Resources
3,527
Mines and mineral resources
1,833
Elementary Secondary Education
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Collection
10,020
Education Resources Information Center (ERIC) Archive
7,917
American Libraries
6,909
NASA Network Resource and Training Site
2,016
Canadian Libraries
1,733
FEDLINK - United States Federal Collection
1,212
Montana State Library
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Creator
10,032
eric
6,909
nasa technical reports server (ntrs)
705
defense technical information center
614
u.s. fish and wildlife service
605
pankaj oudhia
581
united states. bureau of mines
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Language
29,858
English
169
French
78
German
49
Spanish
18
Dutch
16
Portuguese
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